Noun
English Wikipedia has an article on:Wankel engineWikipedia
Wankel engine (plural Wankel engines)
A rotary internal combustion engine, without pistons, using instead an epitrochoid-shaped housing.
A further advantage of the Wankel engine for use in aircraft is that a Wankel engine generally has a smaller frontal area than a piston engine of equivalent power, allowing a more aerodynamic nose to be designed around the engine. Source: Internet
An October 28, 2010 patent from Pratt & Whitney Rocketdyne, describes a Wankel engine superficially similar to Rolls-Royce's earlier prototype that required an external air compressor to achieve high enough compression for diesel-cycle combustion. Source: Internet
As a further advantage, running a Wankel engine at a constant speed gives greater engine life. Source: Internet
General Motors seemed to have concluded the Wankel engine was slightly more expensive to build than an equivalent reciprocating engine. Source: Internet
Developments for cars Mazda and NSU signed a study contract to develop the Wankel engine in 1961 and competed to bring the first Wankel-powered automobile to market. Source: Internet
He was, however, the owner of an NSU Ro 80 with a Wankel engine, which was chauffeured for him. Source: Internet